A device for salvaging broken core section of rotary drilling rig

Abstract

The utility model discloses a salvage device for a broken core section of a rotary drilling drill, comprising a main board, a threaded column being threadedly connected to the top of the main board, a drill bit being fixedly connected to the bottom of the threaded column, and further comprising: a plurality of salvage components are rotatably connected to the side wall of the threaded column, a rotating column is rotatably connected to the inner wall of the threaded column, a sliding ring is connected to the outer wall of the rotating column by a screw rod, a plurality of first connecting frames are fixedly connected to the side wall of the sliding ring, a sliding groove is provided on the side wall of the salvage component, and a second connecting frame is slidably connected to the inner wall of the sliding groove; in the salvage device for the broken core section of the rotary drilling drill, the threaded column is rotated to send the salvage component to the bottom of the part to be salvaged, and then the rotating column is rotated again. Since the rotating column and the sliding ring are connected by a screw rod, the rotation of the rotating column can drive the sliding ring to move downward, and the first connecting frame slides toward the outside of the salvage component by squeezing the second connecting frame through the connecting column, and at the same time, the salvage component is squeezed by the connecting column to rotate toward the outside of the threaded column, thereby being unfolded, which is simple and convenient and convenient for subsequent salvage.

Description

Technical Field

[0001] The utility model relates to the technical field of salvage, in particular to a salvage device for a broken core section of a rotary drilling rig. Background Art

[0002] In the current pile foundation construction, the drill rod of the rotary drilling rig used is generally a telescopic drill rod, which transmits torque through the drill rod tube body and transmits axial pressure through key friction or machine lock. After the core section is broken during the construction process, the upper drill rod needs to be extracted to salvage the drill bit and the lower broken core section. The announcement number is: CN 216691034 U, which provides a salvaging device for the broken core section of a rotary drilling rig, which can effectively solve the problem that the operator has a long salvage work time due to the difficulty of the salvage device to accurately hook the drill rod. A salvaging device for a broken core section of a rotary drilling rig comprises a guide head, a connector, three guide springs and three salvaging claws; the connector is used to connect a lifter of a rotary drilling rig; three connecting seats are evenly arranged on the guide head; the salvaging claw is arranged between two adjacent connecting seats, one end of the salvaging claw is movably connected to the connecting seat through a rotating pin, and the other end of the salvaging claw extends outwards in a free state; one end of the three guide springs is arranged on the guide head, and the other end is respectively arranged on the three salvaging claws and can move along the surface of the salvaging claws, forming a movable device for the connector to lift and lower to drive the three salvaging claws to open and close.

[0003] However, the above scheme will have the following problems when used: the salvage claw of the device rotates around the pin shaft and unfolds under the action of the guide spring and its own weight, but in actual application, there will be a large amount of mud and water inside the pit, which will cause certain resistance to the unfolding of the salvage claw, so it is difficult to unfold the salvage claw by using the action of the spring and its own weight. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a salvaging device for a broken core section of a rotary drilling rig, which has the advantage of manually adjusting the deployment of a salvaging component and avoids the problem that the salvaging claw is difficult to deploy for scooping.

[0005] In order to achieve the purpose of manually adjusting the deployment of the salvage assembly, the utility model provides the following technical solutions:

[0006] A device for salvaging a broken core section of a rotary drilling rig comprises a main board, a threaded column is threadedly connected to the top of the main board, a drill bit is fixedly connected to the bottom of the threaded column, and further comprises:

[0007] The side wall of the threaded column is rotatably connected to multiple salvage components, the inner wall of the threaded column is rotatably connected to a rotating column, the outer wall of the rotating column is connected to a sliding ring with a screw rod, the side wall of the sliding ring is fixedly connected to multiple first connecting frames, the side wall of the salvage component is provided with a sliding groove, and the inner wall of the sliding groove is slidably connected to a second connecting frame.

[0008] According to some embodiments, the first connecting frame and the second connecting frame correspond to each other one by one, and a connecting column is rotatably connected between the first connecting frame and the second connecting frame.

[0009] According to some embodiments, the salvage assembly includes a sleeve plate, which is rotatably mounted on the inner wall of the threaded column, and the inner walls on both sides of the sleeve plate are slidably connected with sliding plates.

[0010] According to some embodiments, a spring is fixedly connected between the sliding plate and the sleeve plate, and the second connecting frame is slidably connected to the sleeve plate.

[0011] According to some embodiments, a handle is fixedly connected to the top of the threaded column, and the rotating column extends to the outside of the threaded column and passes through the handle.

[0012] According to some embodiments, a plurality of rivets are inserted into the surface of the mainboard, and the rivets are used to fix the mainboard.

[0013] According to some embodiments, the salvage components are provided in multiple groups and are evenly distributed around the axis of the threaded column.

[0014] According to some embodiments, the side wall of the drill bit is configured to be conical, and the diameter of the fishing assembly after being expanded is larger than the diameter of the drill bit.

[0015] Beneficial Effects

[0016] The utility model provides a device for salvaging a broken core section of a rotary drilling rig, which has the following beneficial effects:

[0017] The device for salvaging a broken core section of a rotary drilling rig rotates the threaded column to send the salvage component under the part to be salvaged, and then rotates the rotating column. Since the rotating column and the sliding ring are connected by a screw rod, the rotation of the rotating column can drive the sliding ring to move downward, and the first connecting frame squeezes the second connecting frame through the connecting column to slide to the outside of the salvage component. At the same time, the salvage component is squeezed by the connecting column to rotate to the outside of the threaded column, so that it is unfolded, which is simple and convenient and convenient for subsequent salvage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the device of the utility model;

[0019] Figure 2 It is a partial cross-sectional structural schematic diagram of the device of the utility model;

[0020] Figure 3 It is a schematic diagram of the top-sectional structure of the device of the utility model (the salvage component is not unfolded);

[0021] Figure 4 It is a schematic diagram of the top-sectional structure of the device of the utility model (with the salvaging components unfolded).

[0022] In the figure: 1, main board; 101, threaded column; 102, drill bit; 2, salvage assembly; 201, rotating column; 202, sliding ring; 203, first connecting frame; 204, slide groove; 205, second connecting frame; 206, connecting column; 3, sleeve plate; 301, sliding plate; 302, spring; 303, handle; 304, rivet. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1-4 A device for salvaging a broken core section of a rotary drilling rig comprises a main board 1, a threaded column 101 is threadedly connected to the top of the main board 1, a drill bit 102 is fixedly connected to the bottom of the threaded column 101, and further comprises:

[0025] The side wall of the threaded column 101 is rotatably connected with a plurality of salvage components 2, the inner wall of the threaded column 101 is rotatably connected with a rotating column 201, the outer wall of the rotating column 201 is connected with a sliding ring 202 by a screw rod, the side wall of the sliding ring 202 is fixedly connected with a plurality of first connecting frames 203, the side wall of the salvage component 2 is provided with a sliding groove 204, and the inner wall of the sliding groove 204 is slidably connected with a second connecting frame 205;

[0026] The first connecting frame 203 and the second connecting frame 205 correspond to each other one by one, and a connecting column 206 is rotatably connected between the first connecting frame 203 and the second connecting frame 205;

[0027] The salvage assembly 2 includes a sleeve plate 3, which is rotatably mounted on the inner wall of the threaded column 101, and the inner walls on both sides of the sleeve plate 3 are slidably connected with sliding plates 301;

[0028] A spring 302 is fixedly connected between the sliding plate 301 and the sleeve plate 3, and the second connecting frame 205 is slidably connected to the sleeve plate 3;

[0029] It should be noted that: the main board 1 is placed on the top of the pit, and then the threaded column 101 on the top of the main board 1 is rotated, and the threaded column 101 moves into the pit. When it reaches the bottom of the pit, the drill bit 102 at its end is used to drill into the soil. At this time, the broken core section to be salvaged is located above the salvage component 2. Since the sleeve plate 3 is located in the inner cavity of the side wall of the threaded column 101 at this time, the sliding plate 301 is restricted by the side wall of the threaded column 101 and is located in the inner cavity of the sleeve plate 3. The spring 302 is compressed to generate a rebound force, and then the rotating column 201 is rotated again. Since the rotating column 201 and the sliding ring 20 2 is connected by a screw rod, so the rotation of the rotating column 201 can drive the sliding ring 202 to move downward, and the first connecting frame 203 squeezes the second connecting frame 205 through the connecting column 206 to slide toward the outside of the sleeve plate 3, and the sleeve plate 3 rotates to the outside of the threaded column 101. Under the rebound force of the spring 302, the sliding plate 301 slides to both sides of the sleeve plate 3, thereby unfolding the salvage component 2. At this time, the threaded column 101 is rotated in the opposite direction, and the threaded column 101 drives the salvage component 2 to slide upward, thereby using the sleeve plate 3 and the sliding plate 301 to drive the broken core segment to slide upward for salvage, which is simple and convenient.

[0030] Reference Figure 1-4 , a handle 303 is fixedly connected to the top of the threaded column 101, and the rotating column 201 extends to the outside of the threaded column 101 and passes through the handle 303;

[0031] A plurality of rivets 304 are inserted on the surface of the main board 1, and the rivets 304 are used to fix the main board 1;

[0032] The salvage assembly 2 is provided with multiple groups, and is evenly distributed around the axis of the threaded column 101;

[0033] The side wall of the drill bit 102 is set to be conical, and the diameter of the salvage component 2 after expansion is larger than the diameter of the drill bit 102;

[0034] It should be noted that the setting of the handle 303 facilitates the rotation of the threaded column 101. The main board 1 is fixed to the top of the pit with rivets 304 to facilitate subsequent salvage. The salvage components 2 are evenly distributed around the axis of the threaded column 101 to facilitate subsequent expansion to support the parts and salvage the parts.

[0035] Operation method: place the main board 1 on the top of the pit, then rotate the threaded column 101 on the top of the main board 1, the threaded column 101 moves into the pit, and when it reaches the bottom of the pit, use the drill bit 102 at its end to drill into the soil. At this time, the broken core section to be salvaged is located above the salvage component 2. Since the sleeve plate 3 is located in the inner cavity of the side wall of the threaded column 101 at this time, the sliding plate 301 is restricted by the side wall of the threaded column 101 and is located in the inner cavity of the sleeve plate 3. The spring 302 is compressed to generate a rebound force;

[0036] Then rotate the rotating column 201 again. Since the rotating column 201 and the sliding ring 202 are connected by a screw rod, the rotation of the rotating column 201 can drive the sliding ring 202 to move downward, and the first connecting frame 203 squeezes the second connecting frame 205 through the connecting column 206 to slide to the outside of the sleeve 3. The sleeve 3 rotates to the outside of the threaded column 101. Under the rebound force of the spring 302, the sliding plate 301 slides to both sides of the sleeve 3, thereby unfolding the salvage component 2. At this time, rotate the threaded column 101 in the opposite direction, and the threaded column 101 drives the salvage component 2 to slide upward, thereby using the sleeve 3 and the sliding plate 301 to drive the broken core segment to slide upward for salvage, which is simple and convenient.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for fishing a broken core section of a rotary drilling rig, comprising a main board (1), characterized in that: The main board (1) has a threaded column (101) threadedly connected to the top, and a drill bit (102) is fixedly connected to the bottom of the threaded column (101), and further comprises: The side wall of the threaded column (101) is rotatably connected to a plurality of salvaging components (2); the inner wall of the threaded column (101) is rotatably connected to a rotating column (201); the outer wall of the rotating column (201) is connected to a sliding ring (202) by a screw rod; the side wall of the sliding ring (202) is fixedly connected to a plurality of first connecting frames (203); a sliding groove (204) is provided on the side wall of the salvaging component (2); and the inner wall of the sliding groove (204) is slidably connected to a second connecting frame (205).

2. A device for salvaging a broken core section of a rotary drilling rig according to claim 1, characterized in that: The first connecting frame (203) and the second connecting frame (205) correspond to each other one by one, and a connecting column (206) is rotatably connected between the first connecting frame (203) and the second connecting frame (205).

3. A device for salvaging a broken core section of a rotary drilling rig according to claim 2, characterized in that: The salvaging assembly (2) comprises a sleeve plate (3), the sleeve plate (3) being rotatably mounted on the inner wall of the threaded column (101), and the inner walls on both sides of the sleeve plate (3) being slidably connected with sliding plates (301).

4. A device for salvaging a broken core section of a rotary drilling rig according to claim 3, characterized in that: A spring (302) is fixedly connected between the sliding plate (301) and the sleeve plate (3), and the second connecting frame (205) is slidably connected to the sleeve plate (3).

5. A device for salvaging a broken core section of a rotary drilling rig according to claim 4, characterized in that: A handle (303) is fixedly connected to the top of the threaded column (101), and the rotating column (201) extends to the outside of the threaded column (101) and passes through the handle (303).

6. A device for salvaging a broken core section of a rotary drilling rig according to claim 5, characterized in that: A plurality of rivets (304) are inserted into the surface of the main board (1), and the rivets (304) are used to fix the main board (1).

7. A device for salvaging a broken core section of a rotary drilling rig according to claim 6, characterized in that: The salvaging components (2) are provided in multiple groups and are evenly distributed around the axis of the threaded column (101).

8. The device for recovering a broken core section of a rotary drilling rig according to claim 7, characterized in that: The side wall of the drill bit (102) is configured to be conical, and the diameter of the fishing assembly (2) after being unfolded is greater than the diameter of the drill bit (102).

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